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CSCI 333 – Systems Programming

CSCI 333 – Systems Programming. Tuesday, August 27, 2013. Developing Apps for IOS. Introductions. What is your name and major? Do you have a MacBook? What is your experience/background with Apple products? What is your experience/background with smart phones and tablets?. The Basics.

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CSCI 333 – Systems Programming

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  1. CSCI 333 – Systems Programming Tuesday, August 27, 2013

  2. Developing Apps for IOS

  3. Introductions • What is your name and major? • Do you have a MacBook? • What is your experience/background with Apple products? • What is your experience/background with smart phones and tablets?

  4. The Basics • What is an app? • App is simply short for application. It is computer software written for a specific user task. • What is IOS? • Originally iPhone Operating System, IOS is a mobile operating system developed and distributed by Apple. It was released in 2007 for the iPhone and the iPod Touch. It was later extended for the iPad and Apple TV. • Current market share for smart phones: • http://www.comscore.com/Insights/Press_Releases/2013/6/comScore_Reports_May_2013_U.S._Smartphone_Subscriber_Market_Share

  5. The Basics • What is Objective-C? • It is a high-level, object-oriented programming language. It is the main language used for IOS and OS X application development. • What is Cocoa Touch? • It is the user interface (UI) framework for building IOS applications. It is based on Cocoa, which is the application programming interface (API) for the Mac operating system.

  6. Developing Mobile Apps • Mobile apps are designed for smart phones, tablets, and other mobile devices. • How is developing mobile apps different than traditional software development? • The screen size is limited to 320x480 pixels for iPhone and 1024x768 for iPad. Retina displays can double this resolution in both directions. Resolution of 640x1136 is available for iPhone5. • Only one IOS application can be active and displayed on the screen at a given time. • IOS applications have just one window to work with.

  7. Developing Mobile Apps • More differences between developing mobile apps and standard software • IOS apps can read and write files in an area called a sandbox. There is limited access to the rest of the device. • Programs need to open quickly and close down quickly. For example, If your app takes more than 5 seconds to give up control when the user hits the home button, the app may be killed. • Conserving memory is important in writing apps. A device may have 512MB of RAM (1024MB for iPhone5 and new iPad), but much of that is used for the screen and by other system processes.

  8. Developing Mobile Apps • IOS devices have features that many Macs do not have: • Determining geographic coordinates • Built-in camera • Built-in accelerometer • To develop apps for IOS, you will need: • A Macintosh computer • Xcode software • To register as an Apple Developer

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